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Finding the Fourth Proportional to 850,537.10, 1,275,978.45 and 289,628.30

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Solution

The fourth proportional to 850,537.10, 1,275,978.45 and 289,628.30 is: 434,501.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,537.10 : 1,275,978.45 = 289,628.30 : x
  2. Step 2: Convert to fraction form
    850,537.10/1,275,978.45 = 289,628.30/x
  3. Step 3: Cross multiply
    850,537.10x = 1,275,978.45 × 289,628.30
  4. Step 4: Simplify right side
    850,537.10x = 369,559,469,310.14
  5. Step 5: Solve for x
    x = 369,559,469,310.14/850,537.10
  6. Step 6: Final answer
    x = 434,501.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.